AFAIK,The only Sg public buses can reach the 100km/h(Limited)
mark is the JB MK3(I'm not in favour of this bus,FYI).
Also don't trust speedometer says one SBST mechanic,The actual
speed is practically based on the RPM meter.
Exp>Some buses hit 60km/h and the needle can't go any
further,But the RPM needle is just above 3 out of 6.This is what
i've learn inside a training course.